The New Hampshire Trust Co. in Keene has been bought by a subsidiary of New Hampshire Mutual Bancorp — which also oversees Savings Bank of Walpole.

The acquisition was announced this morning, as was a related move: the wealth management division of Savings Bank of Walpole will also join that company, which will eventually be renamed New Hampshire Trust & Wealth Management.

Those working at the two local firms will remain here, the company said in a news release.

The relationship will become effective upon final regulatory approval.